21330023412000 has 384 divisors, whose sum is σ = 70099271424000. Its totient is φ = 5669958528000.

The previous prime is 21330023411987. The next prime is 21330023412001. The reversal of 21330023412000 is 21432003312.

It is not an unprimeable number, because it can be changed into a prime (21330023412001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5829466171 + ... + 5829469829.

It is an arithmetic number, because the mean of its divisors is an integer number (182550186000).

Almost surely, 2^{21330023412000} is an apocalyptic number.

21330023412000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21330023412000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35049635712000).

21330023412000 is an abundant number, since it is smaller than the sum of its proper divisors (48769248012000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21330023412000 is a wasteful number, since it uses less digits than its factorization.

21330023412000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5097 (or 5079 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21330023412000 its reverse (21432003312), we get a palindrome (21351455415312).

The spelling of 21330023412000 in words is "twenty-one trillion, three hundred thirty billion, twenty-three million, four hundred twelve thousand".